Well if every red marbles is 19, and the rest are black, we need to subtract 120-19. And that equals 101
Answer:
49 - x^2
Step-by-step explanation:
(7+x)(7-x)
We know this is the difference of squares
(a-b) (a+b) = a^2 - b^2
7^2 - x^2 = 49-x^2
We can also FOIL
first = 7*7 = 49
Outer: = 7x
Inner: = -7x
Last : -x*x = -x^2
Add them together
49 +7x-7x - x^2
Combine like terms
49-x^2
Answer:
use calculating
Step-by-step explanation:
get a calculator and type it
Answer:
X=1/2
Step-by-step explanation:
-2x1/2=-1
-2x1=-2
-1+-2=-3
Answer
-12/3, -11/3, -2/3, 1/3
Step-by-step explanation:
sorry if im wrong
